That is an interesting question, and one I think requires more specifics. IF I AM THE 2020 WHITE SOX, no.
Reason #1: We have a starting SS in Tim Anderson, a starting 3B in Yoan Moncada, and Nick Madrigal on the way. What do we have in CF? Adam Engel? Leury Garcia? The marginal gain of replacing a successful Franco versus Anderson or Moncada is WAY less, than Robert replacing our current CF's.
Reason #2: We are trying to edge our way into competition, and Franco is probably a late 20 or 2021 addition. So not only do you lose your best CF prospect, and that output for 2020, but you don't gain Franco's output for some period of time that is still TBD.
Reason #3: We already have a long term deal worked out with Robert that gives us cost and service security going forward.
Franco could well end up being better than Robert in the long run, but that doesn't mean he is the best fit for the team and for today.